Chemistry

Question 1

Functional group

Answer 1

An atom or group of atoms that give organic compounds their characteristic reactions.

Question 2

Le Chatelier’s principle

Answer 2

When a change in conditions is introduced to a system at equilibrium, the position of equilibrium shifts so as to cancel out the change

Question 3

Oxidation

Answer 3

The reaction when oxygen is added to a substance / or when electrons are lost.

Question 4

Oxidised

Answer 4

Describes a substance that has had oxygen added to it / or has lost electrons.

Question 5

Precipitate

Answer 5

An insoluble solid formed by a reaction taking place in a solution

Question 6

Hydrated

Answer 6

Described a substance that contains water in its crystals.

Question 7

Incomplete combustion

Answer 7

When a fuel burns in insufficient oxygen producing Carbon monoxide as a toxic product.

Question 8

Fullerene

Answer 8

Form of the element carbon that can exist as large cage like structures based on hexagonal rings of carbon atoms.

Question 9

Galvanised

Answer 9

Iron or steel objects that have been protected from rusting by a thin layer of zinc metal at their surface.

Question 10

Flame emission spectroscopy

Answer 10

A method of instrumental analysis in which the light given off when a sample is placed in a flame produces characteristic line spectra to identify and measure the concentration of metal ions in the sample.